Door-knob.



No. 682,000. atented Sept. 3, I901. W. H. TAYLOR.

000B KNOB (Application filed June 5, 1901.)

(No Model.)

Muyzvrok I Home | TERS co]. monurmm. wusmua'roN n c UNITE STATES ATENTFries.

XVARREN H. TAYLOR, OF STAMFORD, CONNECTICUT, ASSIGNOR TO THE YALE dcTOlVNE MANUFACTURING COMPANY, OF SAME PLACE.

DOOR-KNOB.

SPECIFICATION forming part of Letters Eatent No. 682,000, datedApplication filed June 5,1901.

September 3, 1901.

Serial No. 63,295. (No model.)

Toall whom, it may concern:

Be it known that I, WARREN H. TAYLOR, a resident of Stamford, in thecounty of Fairfield and State of Connecticut, have invented certainnewaud usefullmprovernentsin Door- Knobs; and I do hereby declare thefollowing to be a full, clear, and exact description of theinvention,such as will enable others skilled in the art to which itappertains to make and use the same.

My invention relates to an improvement in door-knobs, and particularlyto means for securing the knobs to spindles, the object being to providea cheap and simple device that will positively and effectually clamp theknob to the spindle at any point on the latter.

\Vith this object in View my invention consists in the parts andcombinations of parts, as will be more fully explained, and pointed outin the claims.

In the accompanying drawings, Figure 1 is a view in elevation, partly insection, of my improvement. Fig. 2 is a similar view, enlarged,showing asection of the spindle locked to the knob. Fig. 3 is a similar viewshowing the spindle in place within the knob, but not locked thereto.Fig. 4 is a sectional view on the line 00 cc of Fig. 3, and Fig. 5 is aview in perspective of the clampingplates and their springs. Arepresents the spindle, provided at one end with a series of holes forthe reception of a pin a, which secures the fixed knob B to the spindle.If sufficient adjustment is not obtainable at the adj ustable-knob endof the spindle, as hereinafter described, additional adjustment canbesecured at the fixed-knob end by simply removing the pin'a andadjusting the fixed knob so that the pin-hole therein will aline withthe proper hole in the shank and then replacing the pin.

My invention, however,relates particularly to the adjustable knob O andspindle A, and comprises a knob the shank of which is recessed, as at b,to receive the clamping-plates D. This recess 1) extends transverselythrough the shank of the knob or partly through from one side for theready insertion and removal of the clamping-plates D. Theclamping-plates D are provided each with an opening corresponding inshape 'with the cross-section of the spindle A, but slightly larger thansaid spindle, so as to permit of the ready entrance of the spindle intothe openings in the plates. The plates are arranged with their facesabutting and are so held by the U-shaped springs E, which latter restwithin grooves e, formed in the outer faces and lower edge of saidplates. Each plate is formed on its edge adjacent to the free ends ofthe springs with a recess f, the two recesses when the disks areabutting forming a conical cavity which receives the conical ends of thescrew F, carried by the adjustable knob C. With this construction itwill be apparent that by forcingin the screw F the plates D will beseparated at their edges engaged by the screw, while their oppositeedges, which rest within a groove g, formed in the wall of the recessdiametrically opposite the serew, are prevented from spreading orseparating. When the clamping-plates are thus separated by the screw,the biting edges of both plates are brought into contact with thesurface of the spindle and solidly and securely clamp it against anymovement whatsoever independent of the knob. As the springs are alwaysexerting a yielding pressure against the plates, tending to close them,it is evident that upon the withdrawal of the screw from contact withthe plates the springs will cause the plates to approach and assumeparallel positions, thus releasing the grip upon the spindle andpermitting the adjustable knob to be withdrawn or read justed. In Figs.1, 2, and 3 I have shown in section a sheet-metal sleeve encircling theshank of the knob and closing the openings through which theclamping-plates are introduced. This sleeve is held in place by thescrew F, which, as before stated, is for looking the clamping-plates tothe spindle.

It is evident that many slight changes might be made in the relativearrangement of parts shown and described without departing from thespirit and scope ofmyinvention. Hence I would have it understood that Ido not wish to confine myself to the exact construction of parts hereinshown and described; but,

Having fully described my invention, what I claim as new, and desire tosecure by Letters Patent, is-

1. The combination with a spindle, of a knob, clam ping-plates locatedwithin a recess in the shank of the knob and provided each with anopening for the passage of the spindle, means for separating said platesat one edge whereby they are caused to bind against and clamp thespindle, and means tending to yieldingly force the clam pin g-platestogether.

2. The combination with a spindle, of a knob, clamping-plates carried bysaid knob and provided with a hole for the passage of the spindle,springs for yieldingly holding said plates in contact and a screw forseparating said plates at one edge.

3. As a new article of manufacture a knob ing witnesses WARREN I-I.TAYLOR. WVitnesses:

SOHUYLER MERRITT, TIMOTHY HUSHION.

